Geared motor



Dec. 7, 1937. SCHMTTER 2,101,515

GEARED MOTOR Filed July 28, 1933 4 Sheets-Sheet l 3nnenfor Gttorneg Dec. 7, 1937. P. SCHMITTER GEARED MOTOR Filed July 28, 1935 4 Sheets-Sheet 2 4 Gttorneg Dec. 7, 1937. w p scHMlTTER 2,101,515

GEARED MOTOR Filed July 28, 1953 4 Sheets-Sheet 4 ATTORN Y Patented Dec. 7, 1937' *UlllTED STATES GEABED MOTOR Walter P. Schmitter, Milwaukee, Wis., assignor to The Falk Corporation, Milwaukee, Wis., a corporation of Wisconsin Application July 28, 1933, Serial No. 682,542

' 1 Claim. (01. 74-421) This invention relates to geared electric motors of the type wherein the power developed by a motor at relatively high speeds is rendered available at reduced speedsthrough a reduction gearing forming a part of the unit.

In my prior Patent No. 1,971,968, dated August 28, 1934, I have disclosed a form-of gearedmotor unit of exceptionally sturdy and compact design, involving an eflicient, quiet running gear set contained within a housing, well adapted for structural combination with replaceable electric motors of various sizes and' makes, without requiring material alteration in the motor.

In the unit shown in said patent, a footless vertical type motor is employed supported horizontally by connections applied to one end only of the motor. Motors of that type, though standard, are not as common as motors of the horizontal type, equipped with mounting feet, and are not as readily available to the ordinary user for replacement purposes.

An object of the present invention is to provide an improved geared motor unit wherein the motor is supported by the gear housing through means adapted for structural combination with the motor feet.

Other objects and advantages will appear, expressed or implied, from the following description of two illustrative embodiments of the present invention.

In the accompanying drawings:

Figure 1 is a perspective view of a geared motor unit constructed in accordance with the present invention.

Fig. 2 is a front end view thereof with a part of the end head broken away.

Fig. 3 is a vertical longitudinal sectional view.

Fig. 4 is a sectional view on the line 4-4 of Fig. 3.

Figs. 5 and 6 are fragmentary sectional views on the lines 5-5 and 6-6, respectively, of Fig. 4.

Fig. 7 is a side elevation, partly in section, of a modified form of the present invention. v

The geared motor shown in Figs. 1 to 6 comprises a housing l0, divided by an intermediate partition II to form at the forward end an oil tight enclosure I2 for the speedreduction gearing to be later described, and at the rear end an open portion ii to receive and support a standard horizontal motor M.

In this instance the end portion it constitutes an integral part of the housing It and includes a bottom portion in the form of a base plate I! on which the motor is mounted and to which the motor feet I. are releasably secured by bolting or otherwise. By the use of interchangeable blocks or pads ll of various thicknesses, various sizes and shapes of motors may be employed properly aligned with the reduction gearing.

The gear enclosing portion l2 of the housing is similar in many respects to the corresponding 5 portion of the housing shown in my prior patent above identified. It is provided with upright side walls l8 (Fig. 4) which rise from a substantially flat bottom l9 and merge into a substantially semi-cylindrical top wall 20, and at its forward 19 end it is closed by a circular end head 21 removably secured thereto by screws 22 or the like.

A power take-off shaft 23, driven by a gear 24, projects forwardly through the end head 2 i. This shaft is journalled in an anti-friction bearing 25 in the head 2| and also in an anti-friction bearing 26 in a. thickened portion 21 of a dished supporting structure 28. The structure 28 is provided with a peripheral mounting ring 29, interposed between the head 2| and the housing 20 portion I2 and provided with a circular shoulder 30 engaged within the head to center the same with respect thereto. The ring 29 is preferably secured to the head 2i by screws 3! or otherwise.

A series of lugs 32 on the structure 28 coact with a corresponding series of internal lugs 32 on the housing portion i2 to brace the structure and to accurately center the same and end head 2| with respect to the housing. The housing lugs 30 33 also provide secure anchorage for the several head retaining screws 22.

The gear 24 is driven by a pinion 34 (Fig. 6) carried by a countershaft 35 j! malled in a forward bearing 36 in the end head 2| and in a 35 rear bearing 31 in the portion 21 of the structure 28. The shaft 35 also carries a gear 38 which meshes with and is driven by a pinion 19 on a second countershaft l0.

Shaft 40 is journalled in a, forward bearing 4| fixed in the portion 21 of the structure 28 and in a rear bearing 42 removably seated in a hub portion 43 of the partition II. This shaft also carries a gear 44 which meshes with and is driven by a pinion 45 (Figs. 5 and s) on a stub shaft 46 45 aligned with the power take-off shaft 22 and with the shaft 41 of the motor ll.

Shaft 46 (Fig. 3) is journalled in a forward bearing 48 in the portion 21 of the structure 22 50 and in a rear bearing 48 in a bushing 50 removably fixed in a hub portion ii of the partitionl I. The forward end of shaft 46 is removably seated in and centered by a bushing 52 removably fixed in the bearing 48, the arrangement being such 55 scribed, and a motor supporting portion 83',

that when the bushing W is withdrawn from the hub portion ti it carries the shaft 66 and pinion 55 with it, leaving the bearing 38 within the structure 28.

The arement is also such that when the head 29 is removed, the structure 28, attached to it, is removed with it, carrying the several shafts 23, 85, and 41d and their coacting gears from. the housing.

It will be noted that, with the several shafts and gears arranged in. the manner described, a triple reduction in speed is provided between the motor shaft Qt and the power take-on shaft 28, the shafts and gears being enclosed in a housing substantially identical in shape and size with that disclosed in the applications above identified.

As indicated, particularly in Fig. 3, the stub shaft 56 is hollow at its rear end to loosely receive and accommodate the projecting end of the motor shaft 457, and is separably connectedin driving relation with the shaft 3? preferably through an appropriate flexible coupling 53.

The coupling 53- is of a well known resilient type and is fully described in the prior patent to myself and Percy C. Day, No. 2,027,842, dated January 14, 1936. It includes a disk 54, keyed to the motor shaft 61, anda coacting disk 55, shown as formed integral with the rear end of the shaft 46. The disks are interconnected by resilient leaves 56 engaged in peripheral radial slots in. the disks and confined within a suitable housing. A sleeve 57 on the shaft 46 is grooved, as indicated, for coaction with the bushing 50 to form an efiective oil seal.

The geared motor shown in Fig. 7 includes a housing having a gear enclosing portion l2, substantially identical with that hereinabove destructurally similar to the portion l8 hereinahove described, but removably attached to the portion 92'.

The power take-oh shaft 231, projecting through the end head 2!, is driven from the motor id, through the coupling 52' and through a double or triple reduction gear train within the housing portion 92'.

In this instance the motor supporting portion 03' comprises a bottom 65' in the form of a plate extending horizontally from a vertical mounting ring E3 removabiy seated within a circular end flange 6t projecting rearwardly from the housing portion 92'. The ring 60 is removably fixed to the flange 66 by appropriate means 62, such for instance as the bayonet joint described in my copending application first hereinabove mentioned.

Various changes may be made in either of the embodiments oi the invention hereinabove specifically described without departing from or sacrificing the advantages of the invention asdefined in the appended claim.

I claim:-

In a. device of the character described the combination of a casing having an end flange, a closure wall within said flange, a removable end head at the other end of said casing, a driven shaft journalied in said end head and projecting therefrom, speed reduction gearing within said casing for driving said shaft, .a motor bracket having a portion removably fixed to said flange andalso having a plate-like portion extending therefrom, a footed motor for driving said gearing, and means for attaching the feet of said motor to said plate-like portion to position and support the motor.

WALTER 'P. SCHMI'I'IER. 

